Regular Expressions 101

# noqathe literal text # noqa (case insensitive)

Non-Capturing Group(?::[\s]?(?P<codes>([A-Z][0-9]+(?:[,\s]+)?)+))?

?repeats the group contents below at most once:

:the literal : (58₁₀ / 72₈ / 3A₁₆)

Character Class[\s]?

?matches at most one character from the set below:

\sa Unicode whitespace character

Group codes(?P<codes>([A-Z][0-9]+(?:[,\s]+)?)+)

Group 2([A-Z][0-9]+(?:[,\s]+)?)+

+repeats the group contents below at least once:

Character Class[A-Z]

A-Zone character from A (65₁₀) to Z (90₁₀) (case insensitive)

Character Class[0-9]+

+matches at least one character from the set below:

0-9one character from 0 (48₁₀) to 9 (57₁₀)

Non-Capturing Group(?:[,\s]+)?

?repeats the group contents below at most once:

Character Class[,\s]+

+matches at least one character from the set below:

,the literal , (44₁₀ / 54₈ / 2C₁₆)

\sa Unicode whitespace character

Global pattern flags

g modifier: global. Finds all matches instead of stopping after the first

m modifier: multiline. Causes ^ and $ to match the start and end of each line, not only the start and end of the string

i modifier: insensitive. Matches without distinguishing uppercase and lowercase letters

Detailed match information will be displayed here automatically.

25 tokens

Regular Expression

# noqa(?::[\s]?(?P<codes>([A-Z][0-9]+(?:[,\s]+)?)+))?

New

# ``# noqa``
# ``# noqa: E123``
# ``# noqa: E123,W451,F921``
# ``# NoQA: E123,W451,F921``
# ``# NOQA: E123,W451,F921``
# ``# NOQA:E123,W451,F921``
# ``# noqa:E123,W451,F921``

Regular Expression

Substitution